A solution is made by dissolving 29.8g of sodium chromate, Na2CrO4, in enough wa

Question

A solution is made by dissolving 29.8g of sodium chromate, Na2CrO4, in enough water to make exactly 250mL of solution. Calculate the concentration (molarity) of Na2CrO4 in mol/L (M). A solution is made by dissolving 29.8g of sodium chromate, Na2CrO4, in enough water to make exactly 250mL of solution. Calculate the concentration (molarity) of Na2CrO4 in mol/L (M). A solution is made by dissolving 29.8g of sodium chromate, Na2CrO4, in enough water to make exactly 250mL of solution. Calculate the concentration (molarity) of Na2CrO4 in mol/L (M).

Explanation / Answer

Na2CrO4 molar mass = 162 g/mol

Na2CrO4 mass = 29.8 g

Na2CrO4 moles = mass / molar mass

                            = 29.8 / 162

                            = 0.184

volume = 250 ml = 0.25 L

molarity = moles / volume (L)

molarity = 0.184 / 0.25

              = 0.736 M

molarity of Na2CrO4 = 0.736 M

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.